commit e2523b287cc52e9908e615d06ae249caa9b3e416
author Chris Lattner <sabre@nondot.org> Tue Jan 11 08:16:49 2011 +0000
committer Chris Lattner <sabre@nondot.org> Tue Jan 11 08:16:49 2011 +0000
tree b074ede416fd3054a3aaf879c96bc12417e1a1b3
parent f6ae904e349b01dfe1808752118e3f2f5b44bbc1

when MergeBlockIntoPredecessor merges two blocks, update MemDep if it
is floating around in the ether.

llvm-svn: 123223

llvm/lib/Transforms/Utils/BasicBlockUtils.cpp

diff --git a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
index 40d33d1..e71e84f 100644
--- a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -179,6 +179,10 @@
       
       if (LoopInfo *LI = P->getAnalysisIfAvailable<LoopInfo>())
         LI->removeBlock(BB);
+      
+      if (MemoryDependenceAnalysis *MD =
+            P->getAnalysisIfAvailable<MemoryDependenceAnalysis>())
+        MD->invalidateCachedPredecessors();
     }
   }